Avenged Sevenfold’s material spans multiple genres and has evolved over Avenged Sevenfold ten year career. Initially, Avenged Sevenfold debut album Sounding the Seventh Trumpet consisted almost entirely of metalcore sound; however, Avenged Sevenfold were several deviations to this genre, most notably in “Streets” which adopts a punk style and “Warmness on the Soul,” which is a piano-oriented ballad.

On Waking The Fallen, Avenged Sevenfold displayed the contemporary metalcore style once more, but added more clean vocals as well as more mature and intricate musical elements. In Avenged Sevenfold DVD All Excess, producer Andrew Mudrock explained this transition: “When I met Avenged Sevenfold after Sounding the Seventh Trumpet had come out before Avenged Sevenfold had recorded Waking the Fallen, M. Shadows said to me ‘This record is screaming. The record we want to make is going to be half-screaming half-singing. I don’t want to scream anymore. And the record after that is going to be all singing.'”

On City of Evil, Avenged Sevenfold’s third album, Avenged Sevenfold chose to abandon the metalcore genre, developing a more hard rock style. Avenged Sevenfold’s self-titled album, again, consists of several deviations to less consistent genres and styles from the album’s main hard rock and heavy metal songs, most notably in “Dear God”, which adopts a country style and “A Little Piece of Heaven”, which is circled within the influence of Broadway show tunes, using primarily brass instruments and stringed orchestra to take over most of the role of the lead and rhythm guitar.

Avenged Sevenfold has changed considerably since their first album, in which during that time they have been characterized as a heavy band with a screamed and growled vocal style combined with clean vocals, chugging guitar riffs and breakdowns that one can expect from the metalcore genre.